Record envelope, standing records and threshold days for Koepenick (USC00474295), Wisconsin, United States, with 33 years of record.
Key Facts for Koepenick
Koepenick (USC00474295) is a weather station in Wisconsin, United States at 45.38 latitude and -89.18 longitude, 513 m (1,683 ft) above sea level.
The station reports from 1893 to 1925, 33 years of record.
1,464 records set at Koepenick still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Koepenick set a daily record precipitation of 26.4 mm (1.0 in) on 13 June 1925.
About the Station
Location: Wisconsin, United States, 45.38 latitude, -89.18 longitude.
Elevation: 513 m (1,683 ft).
Period of record: 1893 to 1925, 33 years.
Eligible elements: prcp.
Daily Record Envelope and 2026
0 days at or beyond a record
Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Koepenick. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Koepenick, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
11.1 C (52.0 F)
-41.1 C (-42.0 F)
n/a
n/a
Feb
15.0 C (59.0 F)
-37.8 C (-36.0 F)
n/a
n/a
Mar
25.6 C (78.1 F)
-32.8 C (-27.0 F)
n/a
n/a
Apr
29.4 C (84.9 F)
-21.7 C (-7.1 F)
n/a
n/a
May
35.6 C (96.1 F)
-12.2 C (10.0 F)
n/a
n/a
Jun
37.2 C (99.0 F)
-6.7 C (19.9 F)
n/a
n/a
Jul
37.8 C (100.0 F)
0.0 C (32.0 F)
n/a
n/a
Aug
35.0 C (95.0 F)
-3.3 C (26.1 F)
n/a
n/a
Sep
33.9 C (93.0 F)
-6.7 C (19.9 F)
n/a
n/a
Oct
32.2 C (90.0 F)
-15.0 C (5.0 F)
n/a
n/a
Nov
23.9 C (75.0 F)
-25.6 C (-14.1 F)
n/a
n/a
Dec
15.6 C (60.1 F)
-34.4 C (-29.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Koepenick still stand. 1903 holds the most, with 86.
Standing records at Koepenick by the year they were set
Year set
Standing records
1893
29
1900
5
1901
71
1902
55
1903
86
1904
59
1905
61
1906
80
1907
73
1908
62
1909
59
1910
74
1911
66
1912
66
1913
67
1914
52
1915
47
1916
68
1917
56
1918
41
1919
4
1920
56
1921
24
1922
57
1923
64
1924
53
1925
29
Wettest Day of Each Month
Jan: 152.4 mm (6.0 in)
The wettest day on record for each calendar month at Koepenick. The most was 152.4 mm (6.0 in) on 31 January 1893.
Record daily precipitation for each month at Koepenick
Month
Record daily precipitation (mm)
Date
Jan
152.4 mm (6.0 in)
31 January 1893
Feb
76.2 mm (3.0 in)
2 February 1893
Mar
50.8 mm (2.0 in)
20 March 1893
Apr
152.4 mm (6.0 in)
20 April 1893
May
58.4 mm (2.3 in)
30 May 1895
Jun
76.2 mm (3.0 in)
5 June 1905
Jul
84.8 mm (3.3 in)
27 July 1913
Aug
56.6 mm (2.2 in)
10 August 1912
Sep
109.2 mm (4.3 in)
23 September 1904
Oct
63.5 mm (2.5 in)
9 October 1904
Nov
152.4 mm (6.0 in)
21 November 1893
Dec
127.0 mm (5.0 in)
15 December 1893
Period of Record Coverage
1896 to 1925
Complete yearUnder 90 percent of days
27 years of record at Koepenick, 1896 to 1925. 7 years have data for under 90 percent of days and are left out of rankings: 1896, 1900, 1901, 1919, 1921, 1924, 1925.
Cooler than the station meanWarmer than the station mean
One stripe for each of 16 complete years at Koepenick, 1902 to 1923. Blue stripes are years cooler than the station's own mean of 4.7 C (40.4 F); red stripes are warmer. The coolest year was 1912, at 3.6 C (38.6 F), and the warmest was 1906, at 6.0 C (42.7 F). The strongest colour marks a difference of 1.4 C (2.5 F).
Annual mean temperature at Koepenick as warming stripes, 1902 to 1923
Year
Annual mean temperature
Difference from the station mean
1902
5.7 C
+1.06 C
1903
4.9 C
+0.21 C
1904
3.8 C
-0.90 C
1905
4.8 C
+0.17 C
1906
6.0 C
+1.30 C
1907
4.1 C
-0.60 C
1908
5.2 C
+0.52 C
1910
4.7 C
+0.06 C
1911
4.9 C
+0.23 C
1912
3.6 C
-1.02 C
1913
5.7 C
+1.02 C
1914
4.4 C
-0.24 C
1916
3.8 C
-0.90 C
1918
3.8 C
-0.85 C
1922
4.9 C
+0.22 C
1923
4.4 C
-0.29 C
This station does not have enough complete years (30 are needed) to fit a temperature trend.
A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.
Extremes by Year
1893 to 1925
Yearly extremes at Koepenick: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
37.8 C (100.0 F)
1916
33.3 C (91.9 F)
27
Coldest night (TNn)
-41.1 C (-42.0 F)
1912
-34.4 C (-29.9 F)
28
Wettest day (Rx1day)
152.4 mm (6.0 in)
1893
50.8 mm (2.0 in)
33
Wettest five days (Rx5day)
381.0 mm (15.0 in)
1893
77.5 mm (3.0 in)
32
Longest dry spell (CDD)
33 days
1925
19 days
33
Hottest day (TXx)
The hottest day of the year at Koepenick, 1893 to 1925. The record is 37.8 C (100.0 F) in 1916, marked on the chart; the median year is 33.3 C (91.9 F).
Hottest day (TXx) at Koepenick by year
Year
Hottest day (TXx)
1893
n/a
1894
n/a
1895
n/a
1896
8.9 C (48.0 F)
1897
n/a
1898
n/a
1899
n/a
1900
5.6 C (42.1 F)
1901
35.0 C (95.0 F)
1902
35.6 C (96.1 F)
1903
33.3 C (91.9 F)
1904
33.3 C (91.9 F)
1905
35.6 C (96.1 F)
1906
35.0 C (95.0 F)
1907
35.0 C (95.0 F)
1908
32.2 C (90.0 F)
1909
31.7 C (89.1 F)
1910
37.2 C (99.0 F)
1911
36.7 C (98.1 F)
1912
32.2 C (90.0 F)
1913
33.3 C (91.9 F)
1914
36.7 C (98.1 F)
1915
32.8 C (91.0 F)
1916
37.8 C (100.0 F)
1917
37.2 C (99.0 F)
1918
33.3 C (91.9 F)
1919
4.4 C (39.9 F)
1920
31.7 C (89.1 F)
1921
36.7 C (98.1 F)
1922
31.1 C (88.0 F)
1923
30.6 C (87.1 F)
1924
30.0 C (86.0 F)
1925
31.7 C (89.1 F)
Coldest night (TNn)
The coldest night of the year at Koepenick, 1893 to 1925. The record is -41.1 C (-42.0 F) in 1912, marked on the chart; the median year is -34.4 C (-29.9 F).
Coldest night (TNn) at Koepenick by year
Year
Coldest night (TNn)
1893
16.7 C (62.1 F)
1894
n/a
1895
n/a
1896
-23.3 C (-9.9 F)
1897
n/a
1898
n/a
1899
n/a
1900
-16.7 C (1.9 F)
1901
-34.4 C (-29.9 F)
1902
-37.2 C (-35.0 F)
1903
-34.4 C (-29.9 F)
1904
-36.7 C (-34.1 F)
1905
-32.2 C (-26.0 F)
1906
-35.6 C (-32.1 F)
1907
-37.8 C (-36.0 F)
1908
-36.1 C (-33.0 F)
1909
-38.3 C (-36.9 F)
1910
-34.4 C (-29.9 F)
1911
-35.6 C (-32.1 F)
1912
-41.1 C (-42.0 F)
1913
-32.2 C (-26.0 F)
1914
-31.7 C (-25.1 F)
1915
-37.8 C (-36.0 F)
1916
-32.8 C (-27.0 F)
1917
-34.4 C (-29.9 F)
1918
-32.8 C (-27.0 F)
1919
-32.2 C (-26.0 F)
1920
-31.1 C (-24.0 F)
1921
-30.0 C (-22.0 F)
1922
-36.1 C (-33.0 F)
1923
-34.4 C (-29.9 F)
1924
-36.1 C (-33.0 F)
1925
-30.6 C (-23.1 F)
Wettest day (Rx1day)
The wettest day of the year at Koepenick, 1893 to 1925. The record is 152.4 mm (6.0 in) in 1893, marked on the chart; the median year is 50.8 mm (2.0 in).
Wettest day (Rx1day) at Koepenick by year
Year
Wettest day (Rx1day)
1893
152.4 mm (6.0 in)
1894
76.2 mm (3.0 in)
1895
58.4 mm (2.3 in)
1896
35.6 mm (1.4 in)
1897
35.6 mm (1.4 in)
1898
50.8 mm (2.0 in)
1899
30.5 mm (1.2 in)
1900
50.8 mm (2.0 in)
1901
53.3 mm (2.1 in)
1902
33.0 mm (1.3 in)
1903
63.5 mm (2.5 in)
1904
109.2 mm (4.3 in)
1905
76.2 mm (3.0 in)
1906
50.8 mm (2.0 in)
1907
53.3 mm (2.1 in)
1908
38.1 mm (1.5 in)
1909
42.2 mm (1.7 in)
1910
35.6 mm (1.4 in)
1911
35.6 mm (1.4 in)
1912
81.3 mm (3.2 in)
1913
84.8 mm (3.3 in)
1914
38.1 mm (1.5 in)
1915
45.7 mm (1.8 in)
1916
38.1 mm (1.5 in)
1917
40.6 mm (1.6 in)
1918
50.8 mm (2.0 in)
1919
0.0 mm (0.00 in)
1920
38.1 mm (1.5 in)
1921
20.3 mm (0.8 in)
1922
63.5 mm (2.5 in)
1923
55.9 mm (2.2 in)
1924
71.1 mm (2.8 in)
1925
26.4 mm (1.0 in)
Wettest five days (Rx5day)
The wettest five days of the year at Koepenick, 1893 to 1925. The record is 381.0 mm (15.0 in) in 1893, marked on the chart; the median year is 77.5 mm (3.0 in).
Wettest five days (Rx5day) at Koepenick by year
Year
Wettest five days (Rx5day)
1893
381.0 mm (15.0 in)
1894
91.5 mm (3.6 in)
1895
71.4 mm (2.8 in)
1896
63.5 mm (2.5 in)
1897
50.9 mm (2.0 in)
1898
68.5 mm (2.7 in)
1899
38.2 mm (1.5 in)
1900
129.6 mm (5.1 in)
1901
116.8 mm (4.6 in)
1902
76.2 mm (3.0 in)
1903
132.1 mm (5.2 in)
1904
111.7 mm (4.4 in)
1905
116.8 mm (4.6 in)
1906
78.7 mm (3.1 in)
1907
119.3 mm (4.7 in)
1908
92.0 mm (3.6 in)
1909
57.7 mm (2.3 in)
1910
53.0 mm (2.1 in)
1911
48.3 mm (1.9 in)
1912
143.4 mm (5.6 in)
1913
55.9 mm (2.2 in)
1914
78.7 mm (3.1 in)
1915
89.0 mm (3.5 in)
1916
55.6 mm (2.2 in)
1917
81.3 mm (3.2 in)
1918
58.4 mm (2.3 in)
1919
n/a
1920
62.3 mm (2.5 in)
1921
43.2 mm (1.7 in)
1922
81.3 mm (3.2 in)
1923
68.6 mm (2.7 in)
1924
94.0 mm (3.7 in)
1925
52.8 mm (2.1 in)
Longest dry spell (CDD)
The longest dry spell of the year at Koepenick, 1893 to 1925. The record is 33 days in 1925, marked on the chart; the median year is 19 days.
Longest dry spell (CDD) at Koepenick by year
Year
Longest dry spell (CDD)
1893
18 days
1894
19 days
1895
13 days
1896
13 days
1897
17 days
1898
19 days
1899
16 days
1900
10 days
1901
22 days
1902
21 days
1903
13 days
1904
14 days
1905
17 days
1906
15 days
1907
10 days
1908
22 days
1909
14 days
1910
22 days
1911
23 days
1912
21 days
1913
25 days
1914
21 days
1915
29 days
1916
22 days
1917
23 days
1918
28 days
1919
1 day
1920
19 days
1921
13 days
1922
15 days
1923
26 days
1924
21 days
1925
33 days
Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.
Download the Data
Data for Koepenick standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Koepenick threshold days by year: CSV or JSON. Field meanings are on the data page.
Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-15 (15 October 2026). Records are computed by this site and are not official.